You're welcome. Field stop size of ES25-100 was one of interest as well.
I uploaded closeup ES25-100 photo of side-by-side with Nagler 31T5.

Regarding visual experience, I have nothing to add beyond Don described earlier. I agree with him in all accounts.

ES25-100 needs about 2.8mm Inward focus distance lesser than N31T5 but if your diagonal 2" holder hits bottom, you loose the advantage. It happened with Baader 2" diagonal. Astro Physics MaxBright was OK. I mean nosepiece went in all the way.

Field lens side, trying to show blue fuzzy field stop that people are talking about:

Eye lens side:

Upper body shot:

Tammy

There is a blue ring at the field stop for the 20, 14 and 9mm versions as viewed under similar conditions. It gets harder to see as the focal length decreases.

Welp, I canceled the pre-order I had at one vendor and bought the ES100/25 from eyepiecesetc.com (thanks Don)! I just couldn't wait any longer!

And now I'm on back-order.
Seriously, though, my criticisms of this eyepiece, as seen in some of my prior posts, are really minimal. It seems to perform fine in the focuser, even though the 31 Nagler has a tad more field.
It's not the bargain of the other 100s from ES, but it isn't dramatically over-priced, either.

It's not the bargain of the other 100s from ES, but it isn't dramatically over-priced, either.

Soon, it'll not be $599, but $549. After a while, it'll be $499. Then christmas 2013 comes, and it gets on sale for $399!

I kind of doubt that they'll cut the price for this thing that much. My guess is that ES believes they have something that Televue doesn't and so they don't have to slash prices to pickup market share.

It looks like they're using the same pricing with the 9mm 120 degree eyepiece. Even coming from China these eyepieces must be pricey to manufacture.

These two eyepieces allow them to market themselves as starting to be innovators rather than just a company that makes knock-offs.

It's not the bargain of the other 100s from ES, but it isn't dramatically over-priced, either.

Soon, it'll not be $599, but $549. After a while, it'll be $499. Then christmas 2013 comes, and it gets on sale for $399!

Clear skies!
Thomas, Denmark

Seems to be an ES trend to lower prices around XMAS, and to take advantage of initial release higher demand. But let's not forget part of pricing is due to economy and supply and demand. If the economy recovers ES has the option to end (or reduce) the sale. Ending a sale is different than raising the price, although the customer still pays more.

As a set of four you're looking at around 365 per ocular at the current prices. Around about where they should sit in this market(?).

Had the 25mm out for a quick (15 min...clouds) session two nights ago in lousy conditions. It's sharp and like the other three I've got to mash my eyeball right into the eyeguard which I like... no eye placement issues for me at least and no problems with the neighbors lighting that way either. A shadow transit on Jupiter looked good considering and M42 showed layering and more color than I usually pick up.... but this could easily be the CPC 11HD doing its thing.

Possible small window tonight before the next clipper drops the temps into the teens below zero for a week or so.

Yet another picture of our favorite ES100! Mine came today from EyepiecesEtc Thanks again Don!!

This one however had different packaging than my other ES100's!

A very cool hard board flip top boasting a star map of vicinity of the Milky Way Core This is THE BEST box I've ever got, almost better than the EP that came in it! In the future, if anyone buys this 2nd hand INSIST on the box.

Telescopes, especially new telescopes or telescopes with new eyepieces, emit moistons. Moistons cause the sky to cloud up as water molecules condense around the moistons. If enough moistons are emitted (many new scopes or eyepieces in one area), it will actually rain.

Only the full or near-full moon is bright enough to disperse the moistons, which explains why it's always clear at full moon.

Hmmmm...moistons... Given the number of new scopes and eyepieces purchased by the denizens of <cloudynights.com>, not to mention the used stuff moving around here, it appears that we have met the enemy and he is...US. But if we stop buying, then our great nation will sink into oblivion, not to mention some of our most distinguished members (and our host!), so..buy on. Perhaps one day we will see the sky again.

I just got back from 4 nights in Death Valley. I was able to observe for 2 nights at Mesquite Springs campground. I did public outreach astronomy for about 30 people the first night and about 15 the 2nd night. There were a lot of scouts and others camping over the 3 day weekend. It was plenty dark for showing the brighter stuff under a 1st quarter moon. The ES25mm 100AFOV eyepiece was used for stuff like M44, M45 and the double cluster. People had no problems with eye placement. After about 3 hours, I set my alarm for 2am and went to bed waiting for the moon to go down.

I spent from 2 to 4 AM enjoying a quite campground with no lights and the moon was down. The 25mm eyepiece was quite useful for scanning the skies. I was using a TEC 140 refractor on a Discmount DM6. It was on a Planet tripod with Losmandy extension. I was able to see Mararian's chain, Leo's triplet and many other galaxies. There was enough of a breeze to chill the air but not enough to bother the scope. The 2nd night I set the alarm for 3am. The wind at that time was too strong so I went back to bed.

I was able to do some back and forth between the ES 25 100 AFOV, the Ethos 21 and Naglar 31T5. There is a lot of overlap between the true field of view of the 31T5 and the ES 25. Both are good eyepieces. If I only used one scope at a time I probably wouldn't own both. Since I am often observing with a 20 inch dob I will keep all of them.

The eyepiece is heavy but it wasn't a problem for my Discmount DM6. I don't think it will mater much on our Obsession 20F5. It may be a problem on an 8-12 inch tube dob.

I will defer that opinion until I have a chance to try them both out in the Obsession 20F5. That would give me a better idea of how it works in a faster scope. When I was trying identify smaller galaxies the additional magnification with the ES 25 was apparent. I didn't have a chance to look a extremely wide objects such as the North America or Veil nebula.

I will defer that opinion until I have a chance to try them both out in the Obsession 20F5. That would give me a better idea of how it works in a faster scope. When I was trying identify smaller galaxies the additional magnification with the ES 25 was apparent. I didn't have a chance to look a extremely wide objects such as the North America or Veil nebula.

Thanks for the visual report. I also have 20mm 100AFOV and 30mm 82AFOV eyepieces, and would like to have your opion on the new 25 100AFOV and which you would use more. I would antipate (me) using the 25mm 100 AFOV the most out of the 3 for widest high power view, if I had all three.